Push-switch socket



' May 20, 1930'. M PETERSEN 1,759,521

v PUSH SWITCH SOCKET Filed Feb. 14, 1928 assembled position.

Patented May 20, 1930 CARL MQPETERSEN, on `frIvr1\if.'1o1ir,'NEW JERSEY, AssreNoR To CIRCLE E. MEG. COQ, or 2 f. TRENTON, NEW JERSEY, n CORPORATION OE NEW JERSEY PUSH-SWITCH sOo'KE'r n Appncation med February 14,' lees. serial No.; 254,296;

vrlhis `invention relates toilamp sockets or equivalent electrical receptacle for'receiving the plug .of a lamp lor an attachment'and more particularly to a novel push switch assembly therefor; y i

A primary object of the invention isto provide a simple andpracticalv construction including relatively few partsthereby not only effecting economies in manufacture and asf sembly, but also enabling the parts to'be made in such a way that they'last longer Vin service and fully meet the underwriters. requirements.' "f -v A further object ofthe invention is to lprovide a construction which may he` assembled with alminimum number yof fastenings, the construction and arrangement of-"the switch parts being such thatfthe fastenings hold the porcelain and screw'shellvmembers together while the switch parts are resiliently clamped between them.

A further obj ect ofthe invention is to providey a novel switch contact spring whichv serves not only as the center plug contactof the socket but also assists'in holding the operating or actuating means forthe spring in With the above and otherobjects in view which will more readily appear "as the ynature of the invent-ion is better understood, the same consists lin the ,novel construction, combination andarrangement'of parts hereinafter more fully described, illustrated and claimed.

ing it closed.L

' Figure 5 is a transverse crosssectional viewy taken on the line 5-5 of Fig. 2.

"PATENT OFI-ice4 Figure 6 is aV detail perspective View 'of the push bar.

Figure 7 is a detail perspective view of the comhinedconta'ct spring and center kplug contact.

Figure 8 is a detail sectional View of a modified form of spring and center plug contact construction'. y

Similar reference characters designate corresponding parts throughout the several figlires of the drawings.

The present invention includes in lits organi'zation a porcelain body block'designated generally as A, an insulating disk B and a screw shell contact C, the same heiligheid in assembled relation by the screws or equiva-` lent fa'stenings 1 and 2 as'shown in Fig. 2 of the drawings.

The fastening l `engages directly with the screw shell contact C and also with the line wire binding terminal 3 thereby to provide a direct current path from said terminal to the screw shell. The fastening 2 also engagesr with lthe screw shell contact 2 and passes through the insulating' disk B and an opening in the insulating body -A to receive a nut 4.- positioned in a recess of the insulating body block whereby this `fastening merely serves as additional means for connecting the parts without performing any electrical function. In that connection it is to be noted that i thefastening 2 serves to clamp the binding terminal 5 between the insulating body block A and the disk B,the lower end of said line wire terminal 5 being slotted or cut away as indicated 'at .6 to avoid contact with the screw 2, the said screw however being also protected by -the downwardly projecting collar 7 formed from the body of the block A. The

line wire terminal 5 has arranged between the upper face of its lower inturned portion and the'underside ofthe porcelain `block A, a

spring contact finger' 8 as will be readily obl served from Fig. 5, the lsaid finger therefore being in electrical'contact with the terminal. Y

thereof arrangedacross the transverse channel Y' or opening D in the'body block which houses i the carabine@ Girelli@ @leser and center plug contact designated generally as (Fig. 7).

The said combined circuit closer and cen- Y ter plug contact is of novel formation as will be observed from Figs. 3, 4 and 7, the same lincluding a body portion which is doubled substantially uponitself to provide a base Vportion 11 which restson and overliesitlie disk B and a reversely bent arm portion 12' which lprojects through a srlit'in the` base B thereby to lie beneath the disk to rContact with the center plug of the lamp. To assist in preventing lateral shifting or slipping of the Y body portion 11 of they spring 'the same is provided with the offset lugs 11a adapted' to lit in the notches 11b of the block A as will be observed from Fig. 5. The upper or yielding arm 13 of the spring is provided wit-h a central slot 14 having at one end thereof a depressed seat or keeper notch S while the free end 15 thereof is bent at an angleand adaptedv to be pressed into'engagement with the end 9 of the contact finger 8 l(see Figs. 3 and 4). vF or the purpose ofr operating Athe'arm Y13 of the spring 10 to close the circuit through the lamp held withinthe screw shell'C, a

slidable push bar or actuator 16 is utilized.V This push bar preferably consists r oi a' metallic strip or bar portion having the finger engaging knobs 17 and 18 at the ends thereof while the intermediate portion is provided A with adown-turned andlaterally o iis'et Vguiding andjholding arm 19, the samebeing adapted to ride in a recess 2O in the transverse opening D of the body A as shown in Figs. 2 and a5 thereby to assist in limiting the lmovement or throw `of the push bar and 'to also have .a sliding engagement with Vthe upper surface of the insulating disk BV to prevent the actuation of the yielding portion 15 of the contact spring except when tliepush bar is moved or actuated through Vthe operator pushing either one of the knobs 17 or`18V as will presently appear. The portion of the body of the Vpush bar adjacent the arm19is provided with ra lateral recess having a'pivot axis or hanger 21 which carries a shiftable cam member 22 whose lower .portionnormally rides in the slot 14 of the contact spring.

The said cam member/22B provided with asti-aight edge portion 23 having therein a Y notch 24 whichV provides a keeper shoulder 25 while the' opposite edge thereof is cut lin- Vwardly along divergent linesas indicated at when the latch 26 to provide clearance yfor theV push'bar is in tlie position shown in Fig. 4.

' VWith the arrangement described it will be apparent that ,theupper arm of the contact `.cia

spring is normally elevated sotliat the contact'portions 9 vand 15 are out ,ofengagement However, when the push bar lGis moved by A l pressing against the knob 18'thereb-y toA shift the `bar from the position shown'in Fig. 3

. to the position shown in Fig. 4, the latch inember 22 will be carried along so that the edge 23 has a camiiiing action onA the end of the slot 14 adjacent the seat S. The eiect of this camming action is to press the upper arm 13 lof the circuit closing spring and bring the parts 9 and 15 into engagement. kVhen the knob 18 is pushed to its limit, however, the keeper shoulder 25 will snap over the edge of the slot andinto the keeper notch or seat S and thus releasably hold the latch in fengageinent with the lspring .to maintain Ythe; switch closed. lIn this way rthe switch 'will remain closed and held against `accidental opening until the operator positively'pushesor moves the knob 1f( to cause the shoulder 2.5 to be removed from the seat S. YVihen this occurs the yielding arm 13 of the sprin snaps away'froin the part 9 of the contact nger 8 and breaks the circuit which was'previously closed through the lamp.

Y From the foregoing it will berappareu that the present invention providesV a novel and practical construction wherein thefcom bined circuit closer and center plug contact is'held in its assembled positionby reason 'of 5 ing terminalV 3, it willpass through lthe screw Y' Y1 to the metallic screw shell member C, a`nd from thence to the` screwplug ofthe lamp (not shown), and through the lampfilament to the center plug contact12. Since thecenter Vplug Contact 12 is apart of .the circuity closingarin 13, the currentwill pass .tothe end 150i' said arm and to thecontactinger 9 (see Fig.. 4) which is inelectrical contactvwith the bindingrterminal 5 aswillbe apparent Y from Figs. 3, 4 and 5j. rlhe binding terminal 5' is of course connected with'one of the line wires. open tlieswitch, that is, separate the parts`9 and 15 as shown in Fig. 3, thecircuit through theV lamp is, of course, broken.

VFig-8 shows a modification wherein the center plug Contact 12a is connected tothe circuit closing springlO by a fastening 1217 which penetrates the insulating disk B.

lithout further description it is thought that `the features and advantages of the in-` vention will be readily apparentto those skilled in the art, and itwill ofcourse be un- Then the actuatory 16 is shifted to derstood that changes in the 'form,propor l' tion andminor details of construction maybe resorted to, without departing from the spirit olf the invention ,and scope'of the appended c aims. f.

lIn a device ofthe class described, in combination with a body, a contact carried by said body, and a springcarried byV said body normally spaced from lsaid contact and movable into engagement therewith to complete an electrical circuit; a shiftablepush bar, and an actuator carried by said push bar for engagement with'said spring to force same into engagement with said contact when v'movable int-o engagement therewith to complete an electrical circuit; of a shiftable-push bar, andan actuator pivoted to said'pushbar for cooperatingwith said spring to 4force the latter into engagement vwith said contact upon shifting movement of the'push bar in apredetermined direction. i v

In an electrical lamp socket, a push switch construction comprising a contact member, a combined circuit closing and center plug' contact spring member including a yieldingarm portion havinga slot, a'slidable member, a member piv'oted to said slidable member and adapted toy ride in said slot whereby movement of the bar in one direction will cause vthe said-pivot`ed member to bear against one edge of the slot to force the circuit ,closing arm downward into engagement with the Contact and movement in the other direction will release said arm.

4:. In a push switch for lamp sockets, a combined circuit closing and center'plug contact spring said spring having a yielding circuit closing arm provided with a slot and a depressed keeper seat at one end of the slot,

a slidable push bar, and means carried by the push bar for engaging with one end of the slot to depress the spring arm and releasably hold the push bar and the spring at the end of the movement of the push bar.

5. In a push switch Vfor .lamp sockets, a

combined circuit closing and center plug contact spring', said spring including an. arm constituting a center plug contact and a yielding arm having a slot provided at one end with a seat, `and means for depressing said yielding arm comprising a slidable member, and a cam pivotally carried by said slidable member and having a shoulder adapted to enter said seat thereby to releasably holdv the cam and spring to hold the spring Contact arm depressed. Y

`6. A push switch lamp socketconstruction including an insulating block, aninsulating disk, a screw shell member, binding terminals `insulated therefrom, ka combined center plug contact member and contact spring, and means forestablishing electrical contact between said contact member and the line wire terminal which is not electrically connected with the screw shell contact.

7. In an electrical lamp socket, an insu.- lating disk, an insulating block yat one side of the disk and a screw shell contact at the other, a Contact member electrically connect ed with a wire terminal, a combined circuit closing springand center plug contact co-mprising a body portion adapted to lie against one side vof the insulating disk and having one end bent back downwardly through the Adisk to provide the center plug contact while theother end of the body is reverselyV bent to provide a spring arm adapted `for engagement with said contact, said arm, having a slot, a slidable actuator mounted in theinsulating block, acam member pivotally carried by the slidable actuator and travelling in said slot whereby one edge of the cam will engage with one end'of the slot 'to press the entire arm downwardly when the actuator is moved in one direction. f

8. In an electrical lamp socket, an insulating disk, an insulating block at 'onek side ofv the disk and a screw shell contact at the other,- a Contact member electrically connected withV a wire terminal, a combined circuit rclosing spring and center plug contact member comprising a'body of substantially S-shaped fon mation, one end thereof projecting through the fibre disk to constitute a center plug contact and the opposite end constituting a yielding circuit closing arm while the body'lies against the insulating disk-,said yielding arm having a slot and al depressed keeper seat at one end of the slot, a push bar slidablymounted in the insulating block, a cam pivotally carried by the bar and located in said'slot and having a straight edge portion and a keeper shoulder, said straight edge portion being adapted to engage one edge of said slotwhen the bar moves in one direction and the keeper shoulder being adapted to rest in said seat when the bar reaches the llimit of its closing Y movement. 1 Y i 9. An electrical lamp socket including an `insulating disk, an insulating block at one side of the diskpa screw shell contact at the otherfside of the disk, a line wire terminal velectricallyconnected with'the screw shell, a

minal, and a spring havingithel ends there-V l of bent in opposite directions, one of the ends 'of the spring passing through the insulating disk to provide acenteiplug contact and the other end overlying theiinterinediate portion of the spring which rests on Athe insulating diskjand having a sl'ot,a pushV bar slidably mounted in the insulating block, a cam pivotally .carriedby thepush bar and adapted totravel inV said slot, and means for releas- -Y ably holding the cam in engagement with the rspring at the end of the movement of the bar `which closes the circuit.

10. In a push switch Construction for lamp VVsockets, a spring having the ends thereof b entV in opposite directions to `provide a center plug contact and a yielding contact engaging arm'provided with a slot, a seat atrone end of the slot, Va push bar having alaterally offset and downwardly extending guide arm and providedwith an intermediatel pivot aXis, a

cam mounted on said pivotaxis and lying in the slot of said arm whereby the cam is held in assembled relation to said pivot aXis,'and saidcam having an edge portion adapted to engage with an endof the slot to depress the spring when the push bar is moved and also yhavinga shoulder operating in conjunction V'with'said edge to engage said seat to releasably hold the cam and the springarm to maintainthe arm in a downward position.

11. In an electrical'device' of theV class described, in combination with a body carrying electricalterminals, a push switch mechanism l. alsocarried by the body including a normal- Yly-ope'n` circuit closing spring andA a push said'push bar, and an actuator operable to engage the spring to move it to closed position Yand to hold the same in such position upon bar carried byandmovable with respect to movement of the bar invone direction and'to release the spring upon movement of the bar in an opposite direction. v

12. Inan electrical device of the class described, in combination with a bodyV carrying electrical terminals, a push switch mechanism Y also carried by the body and including a normally-open circuit closing spring and a push bar, an actuator pivoted to said bar operable torengage the spring to move it in closed t position and to hold the same in such position -Vuponfmovement of the bar in one direction and to release the spring upon movement of [the bar in an'opposite-direction. f

'13. In a device of the class described, the

.combination with a body, a contact carried by said body,-and aspring carried by said body movement of the push bar in a predetermined direction and to quickly release said spring upon shifting movement of the pushbar in Y an opposite direction.

14. In an electrical device of the class de- I scribed, in combinationwith a body carrying electrical terminals, a push switch mechanism mounted in thebody and including a circuit closing slotted spring, 'a push bar, and a tripping actuator pivotedto the bar and extending into the slot of the spring and including a Aportion arranged to act upon the spring by compression to close the'circuit and to hold the spring in such condition when-the push bar is moved in one direction, and to piv-v i ot with respect to the bar to release the spring when the bar is moved in an opposite direcy tion. j l5. Inanelectrical structure-of the class describedin combinationwith aninsulatingbody carrying plug terminals, binding terminals fitted to the body, one of said bindingterminals having a member engaging oveione end,

of the body, a push switch mechanism Vincluding a contact member having a part thereof arranged at oneend of the body and in metallic contact with said member of one of thel binding terminals, and a common fastening device for holding said bindingterminal and from. n Y ,Y Y* In testimony whereof hereunto afix'my i. signature. Y

i iioY i switch contact member in operative position, said common fastening being insulated there- CARL VPETERsuv. 

